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8_murik_8 [283]
3 years ago
12

The metal rhenium becomes superconducting at temperatures below 1.4 K. Calculate the temperature at which rhenium becomes superc

onducting in degrees Celsius.
Chemistry
1 answer:
kotegsom [21]3 years ago
8 0

Answer:

The temperature at which rhenium becomes superconducting is -271.6 ºC.

Explanation:

We can convert the temperature given in Kelvin, which is an absolute scale, into degrees Celsius. which is a relative scale, by a simple algebraic translation, that is:

T_{C} = T_{K} - 273 (1)

Where:

T_{C} - Temperature, measured in degrees Celsius.

T_{K} - Temperature, measured in Kelvins.

If we know that T_{K} = 1.4\,K, then the temperature given in degrees Celsius is:

T_{C} = 1.4\,K-273

T_{C} = -271.6\,^{\circ}C

The temperature at which rhenium becomes superconducting is -271.6 ºC.

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5 0
3 years ago
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If an emergency vehicle passes you in traffic, just as it passes you the pitch of the siren changes as it approaches, the siren’s pitch sounds higher than when it is moving away from you.the frequency increases as the siren is moving toward you, and decreases as it is moving away, is correct

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This effect refers to the  increase in the frequency of sound, as the source and observer move toward (or away from) each other.

The effect causes the sudden change in pitch noticeable in a passing siren.

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3 0
2 years ago
What is the density of lithium metal (in g/cm3) if a cube measuring 0.82 cm × 1.45 cm × 1.25 cm has a mass of 0.794 g?
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Density is given by mass divided by the volume of a substance.
In this case the mass is 0.794 g and the volume is 0.82 cm ×1.45 cm ×1.25 cm = 1.48625 cm³. 
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